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TYPE WRITING MACHINE. y `BIOQ'L'Q'Q. Patented Sept. 15, 1896',

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TYPE WRITING MAGHI'E f Patgnte'd Sept. 15, 1896t Nirn-D STATEsj ATENTGEORGE B. WEBB, OF NEV YORK, N. Y., ASSIGNOR TO 'IIIE VYOKO-FF, SEAMANSd: BENEDIOT, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 567,799, datedSeptember 15, 1896.

Application filed December 27, 1894. Serial No. 533,064. (Ne model.)Patented in England December 27,1894.,No. 25,155.

T0 `cir/ZZ whom, it may concern.- i i Be it known that I, GEORGE B.WEBB, a

citizen of the United States, and a resident of the members of theescapement devices form-` ing part of the letter-spacing mechanism; to`

the line-s pacing and carria ge-retu rnin g mech.- anisms; to means fortripping the escapement mechanism durin the end of the carriage-returnmovement; to the means for arresting the return movements of thecarriage at varying points to produce different widths of margin 5 tomeans acting with the feed-roller for prcventin g the platen fromturning backward when the paper is pulled, and to means for holding theplaten carrier forward when raised for Ainspection or correction of thework, the.

The main object of my invention is to iin.- prove or render efficientsaid portions of the type-writer; and to this end my invention consistsin the various features of construction and combinations of deviceshereinafter more fully described,and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is a top plan view of atype-writing machine embodying my improvements, the keyboard and otherparts unnecessary to the understanding of my invention 4being omitted.Fig. 2 is an elevation, partlyin section, taken at the right-hand end ofthe machine, considered from the front thereof. Fig. 3 is an enlargedvertical cross-section taken atthe line .e of Fig. 1, but with theplaten-carrier turned up. Fig. 4 is an elevation taken at the lefthandend of the machine. Fig. 5 is an enlarged vertical cross-sectional viewshowing the escapement devices separated and showing various other partsof the machine. Fig.

G is a vertical sectional view of some of the l parts shown at Fig. 5,'but in different positions. Fig. 7 is a plan view of. theescapementdogs- Fig. 8 is an enlarged sectional view of the feeding-dogVand part of the ratchet-wheel with which it cooperates, and showin gmore particularly the mode of mounting said dog. Fig. 9 is a sectionalview taken at the line y y of Fig. 5. Fig. 10 is a front elevation,partly in section, of the springhooking devices for the feed-rack andpinion. Fig. 11 is a vertical section of the springn pressed pin at theri ght-hand end of 'the spacing-rack. Fig. 12 is a partial frontelevation showing the front carriage-bracket, yoke, roller, shifter-har,scale, pointer, &c. Fig. 13 is a vertical section taken at the line ma;of Fig. 12. Fig. Il is a top plan skeleton view of the carriage-stopping means, the rack-depressing means, the rack-tripping means, and theircon nected devices, and showing the positions of the parts just beforethe stoppage of the carriage and the tripping of the rack. Fig. 15 is apartial front elevation of the righthand portions of the mechanismsshown at Fig. let and in the positions which they assume when theline-space lever is actuated and before the feedrack is tripped at theend of the return movement of the paper-carriage. Fig. 1G is a similarview to the last mentioned, but showing the positions of the parts afterthe feed-rack has been tripped or released and while the pull on theline-space lever is still maintained. Fig. 17 is a front elevation,partly in section, of the carriage-stopping means or marginal stopcontrivance, the. Fig. 1S is an enlarged vertical section, taken at theline vw Iw of Fig. 17, of the carriage or marginal stop, dac., and therods therefor. Fig. 1S) shows in plan view a modification of the meansfor lifting the ratchet-wheel from engagement with its dogs, and Fig. 20is a sectional elevation of said means with the feed-rack added.

In the various views the same parts will he found designated by the samenumerals of reference.

The machine illustrated herein, to which my improvements have beenadded, is that known as the Remington Standard Typewriter No. 6, but ofcourse some of my im- IOO provements may be applied to machines of othergeneral construction.

Various features of construction shown but not claimed herein and nowforming part of the said No. 6 type-writer are made the subjects-matterof the British Letters Patent No. 156, dated February 6, 1892, and someof the parts of my present invention have been devised to improve orrender more perfect some of the parts shown in the said Letters Patent.

Upon the usual posts 1 is mounted the top plate 2, having at its sideslugs 3 for supporting the ends of a carriage-guide rail 4, on top ofwhich run the grooved wheels 5 of the carriage 6, which is provided neareach end with a hook or arm 7, that bears against the under side of therail and prevents any liftingaction of said carriage, the said hooks orarms being each attached by a screw 8 to the back vertical flange 9 ofthe carriage.

l() 10 are two vibratory arms pivoted at 11 at each end of the carriageand connected together by a longitudinal rod 12. The arms 10 arepivotally connected at their upper ends to the platen-carrier 13, whichis composed of side bars 14 and 15, a front bar 16, and a back bar 17.The rear ends of the side bars of the platen-carrier are provided withlaterally-projecting pins 18, which play between screw-stops 19 in lugs20, projecting upwardly from the carriage at each end, by which meansthe backward and forward vibrations or shifting movements of theplaten-carrier are limited. The front side of the platencarrier has aroller 2l, which travels upon a shift-rail 22, attached to the upperends of shifting levers or arms 23, pivoted to the framework andconnected to a shift-key at the keyboard.

The platen 24 is adapted to rotate freely in the side bars of thecarrier, and at each end is preferably provided with a hand-wheel 25. Atthe right-hand end of the platen is attached a toothed or ratchet wheel26, upon which bears at all times a small roller 27 on the front end ofa spring 2Q, attached to the rear end of the side bar 14, said roller byits pressure preventing` the platen from rotating in either directionaccidentally during the writing.

The platen is adapted to be rotated by the line-spacing mechanism, oi'which Ztl is the driving-pawl and 3U the line-space lever, to which thepawl is pivoted at 3l, the lever being pivoted at 32 in a downwardextension of the side bar 14, and provided thereat with a coiled spring33, having a tendency to throw the line-space lever outwardly whenreleased. The driving-pawl is provided with a tailpiece or downwardextension 34, adapted to be acted upon by a line-space regulator 35, pivoted at 36 and having three sides or faces 37, 38, and

t) arranged at different distances from the pivot, so that the outwardmovement of the line-space lever and driving-pawl may be arrested atthree different points, according as the regulator is turned relativelyto the tailpiece of the driving-pawl, and so that when the line-spacelever is actuated the platen may be rotated one, two, or three not-cheso1 teeth of the ratchet-wheel, as may be desired. rlhe object of thetailpiece of the pawl is to effect the disengagement of the point of thepawl or ratchet-wheel on the return of the line-space lever to itsnormal position, the said tailpiece striking` against one of the facesof the regulator and operating to throw the pawl upwardly just beforethe completion of the return movement of the line-space lever, whichmovement is arrested by the sa-id regulator.

The notched wheel or disk 40 on the axis 36 accommodates a spring 41, bywhich the regulator is held in any position to which it may be adjustedby the finger-piece 42. A pin 43 on the line-space lever limits theupward vibration of the tailpiece and the pawl, and projecting from theline-space lever inwardly is an arm bearing at its extremity a tooth 44to engage the spaces of the ratchet-wheel at the completion of thelinespace action and thereby prevent any overthrow of the platen byinertia. Extending downwardlyfrom this arm is a fin ger 45, adapted toengage with the inwardly and upwardly projecting arm 46 of a rock shaftor lever 47, mounted in suitable bearings 48, depending from the sidebar 14, and having at its rearmost end an inwardlyprojecting arm 4L) anda rearwardly-projecting finger 50.

51 is a returning-spring surrounding the rock-shaft and attached at oneend to a bracket 52, containing the bearings 48, said spring beingadapted to return the rock-shaft to its normal position after havingbeen actuated by the linger and during the return movement of thelatter.

The finger 5 0 normally overlies a pin 53, projecting laterally towardthe right from a l/)earing 54 on the end of the feed-rack 55. The saidpin 53 is adapted to slide within the said bearing and is formed with areduced shank or stem 56, which is surrounded by a coiled spring'57 andprovided exteriorly with a threaded nut 58, the said springl acting tokeep the pin 53 normally projected, as shown more palzticularly at Fig.11. The purpose of this yielding or spring-pressed pin will behereinafter explained.

The rack-bar 55 is provided with a series 1 of teeth 59 on its underside, which are maintained in engagementat all t-imes with a pinion 60on a shaft 61, arranged underthe guide-rail 4 and at right anglesthereto.

On the front side of the rack-bar 55 is attached by screws 62 anangle-bar (i3, the horizontal member or rib of which is adapted to bea-rand ride upon a small roller 64 fast on the front end of the shaft 61.The said screws 6; pass through the feed-rack and enter the curved anddownwardly-tertninating arms 65 ot' a frame composed of said arms and aconnecting-bar 66, which is pivoted or hinged at 67 upon a rod 68,supported in lugs 69, depending from the carriage and held inplacetherein b v set-screws 70. Said rack-bar frame is pro-` vided with aspring 71, having a downward and lateral tendency.

The rack-bar has a laterally-extending arm 7 2 adapted to be acted uponby the rearmost end of a rock-shaft 73, supported in hangers 7 4,depending from the left-han d side bar 15 of the platen-carrierandprovided at its front end with a finger-piece 75, the said rock-shaftbeing designated, usually, as a release-key.

The bars 65 are bent to pass over the guiderod 4 and the connecting-bar66 stands directly above said guide-rod. Attached to this connecting-bar66, on its under side, and bent twice in opposite directions to passover the guide-rod and under the hinge-rod 68 is an arm 76, whichextends rearwardly at right angles to the connecting-bar and from aboutthe center thereof, and which at its free rearmost end is bent or formedto provide a vertical contact-piece 77 to cooperate with a margin-stopdevice 78. This device consists of a block 79, perforated transverselyt-o slide on a rear carriage-guide rod 80and on a short parallelstop-rod 81,provided on its under side with a series of teeth 82, Figs.17 and18, corresponding in distance apart to the teeth of the feed-rackand adapted to receive in the spaces between the teeth the beveled edgeof a finger 83, projecting inwardly from a vertical stem 811, whichslides in a housing in the rear side of the block and `which is providedwith a finger-piece 85, extending above the block, and with a coiledspring 86, having an upward pressure and adapted to hold the saidbeveled finger of the L-shaped catch device normally in one of thespaces `of the toothed bar 81, the block being bifurcated, as at 87, toaccommodate said finger. By reason of the passage through the block ofthe two rods 80 and 81 the block is prevented from rotating;

On the inner side of the block and at its upper portion is provided anadjustable pin, head, or contact-piece 88, Fig. 17, which projectstoward the left slightly beyond the face j of the block and which isadapted to be struck by the contact-piece 77. This pin or head 88 iscylindrical in form and is adjustable lengthwise in a housing 89 bymeans of an independent screw 90, having a set-nut 91, in addition towhich there vis employed a set-screw 92, passing upwardly into thehousing and bearing at its point on the pin, whereby the pin is heldfirmly in any adjusted position. By having the contact part 88 of themargin stop or regulator independently adjustable wear may be providedfor, and at the same time the contact-piece 7 7 may be arranged tostrike the pin orcontact-piece 88 at the proper or most desirable timein the returning movement of the carriage, the contact of the said parts77 and 88 taking place just before the carriage is arrested and trippingor releasing the rack and letter-spacing mechanism, all as will bepresently more fully explained.

The margin-stop, it will be understood, may be adjusted to any desiredposition within the length ofthe rod 81, which for convenience isgraduated to correspond with the machinescale.

Upon the rod is a hanged thimble 93, Fig. 5, with which engages betweenthe flanges the rear forked end of an arm 94, projecting rearwardly fromthe back iiange 9 of the carriage and formed integral therewith andconstituting a part of the carriage. The said arm with its thimble andthe rod 80 assist the rollers 5 and the rod et in the accurate guidingof the carriage during its longitudinal movements.

The shaft 61 passes through a long support, sleeve, or bearing 95, whichis horizontally pivoted at 96 in a st-and or bracket 97, attached to thetop plate, and the rearmost-end of said shaft is provided with a ratchetor escape wheel 98, adapted to be engaged alternately by two dogs 99 and100. A spring 101, attached at one end to said bracket and bearing atits other end upon the top of the shaftsupport in rear of its pivot,acts to hold said ratchet-wheel and dogs normally in engagement.

The rack and pinion are maintained in engageinent at all times by thegravity of the rack and its frame, assisted some by the downward tensionof the spring 7l. This engagement between the rack and pinion isinsured, however, by means of a hook 102, Fig. 6, which clasps the upperside of the horizontal flange or ledge 103 of the angle-bar 63, whichbears upon the roller 64. The said hook is bent laterally to provide ahorizontal pivot 104, which is fitted in a bearing 105 at the forwardend of a bracket 106, fastened by screws 107 upon the innermost end ofthe tilting frame or support 95. This pivoted hook 102 is provided witha spring 108, one end of which is attached to a screw w109 and the otherfree end of which bears in a groove or cut-away on the under side of thepivot 104 and operates to hold the hook normally in an upright positionand upon the flange or ledge. By the use of this device an accidentalseparation of the rack and pinion is prevented when the carriage isreturned and caused to strike its margin-stop violently. At the sametime when it may be desired to remove the carriage from the machine thesaid hook may be turned down about its pivot to a horizontal position,whereby the rack and pinion may be easily separated.

The primary object of having the escapement-wheel and pinion-shaftarranged to tilt, swing, or vibrare is to enable a certain defect in theprior construction to be remedied. In the said prior construction thesaid shaft had merely a rotatory motion, and in order t release thecarriage from its pinion the rack was lifted independently of thepinion; or, in other Words, the line of separation was at the rack andpinion. In practice this was found to be objectionable, in that when theICO rack was lifted from the pinion and the carriage was returned to theright, owing to the shock and consequent displacement of the parts, therack would not always fall onto the proper tooth of the pinion, andhence the carriage would not be arrested and recomm ence the line ofprin ting at the desired point or locality. For instance, thecarriage-stop might have been set to arrest the carriage at O on thescale; but owing to the aforesaid shock and displacement the pinionwould engage at a point on the rack, say, corresponding to 1 on thescale, and hence the carriage would be arrested and commence its travelfrom the last-mentioned point instead of from 0, as desired. lVith thenew construction, however, involving the lifting of the escapement-wheelfrom the dog, this objection is entirely cured.

The rack and pinion being always in engagement, there is no liability ofdisplacement between the teeth of these two devices, and the distancebetween successive teeth on the escapement-wheel being much greater thanthe thickness of the dog there is little or no likelihood of theescapement-wheel engaging with the dog at a wrong tooth or notch of theescapement-wheel when the escapement-wheel and dog are permitted toenter into rengagement.

Pivoted at in a part of the general framework is a dog holder or rocker111, which is in the form of an arm and, extending upwardly, bears atits free end the rigid or holding dog 99 and the yielding or feeding dog100. At the axis of the dog-holder is arranged a returning-spring 112,of the usual construction and arrangement, and from said axis projectsinwardly an arm 113, to a cross-bar 114 of which is attached at one endthe wires or rods by which the universal bar is arranged beneath thekey-levers, common in prior machines and not necessary to be illustratedor further explained herein.

The dog holder or rocker 111 is provided with an adjustable stop 115 ona screw-stein, by which the forward vibrations of said rocker or holderare limited.

rlhe upper end of the dog-holder is formed with a rearwardly-extendingear 11G, to which is attached by a screw 117 the rigid dog 09, Figs. 7,8, and 9. This dog consists, essentially, of a small fiat plate, theupper working end of which has a beveled or inclined portion or tooth118 and a straight portion or tooth 119, the latter being parallel withthe sides of the plate and the former bent at an angle thereto andtoward the right, viewed from the front of the machine. This bent orangular portion 118, in connection with the escapement-wheel 98, effectsa quick. releasement and feed of the carriage.

The loose or iiexible dog 100 is pivoted at 120 upon the said rocker orholder 111, and is formed with two flat shoulders or faces 121 and 122,one above and one below the said pivot 120. Bearing uponthese faces 121and 122 is a spring 123, curved or hook-shaped at its upper end, as at124, and secured to the rocker at its lower end by a screw 125.

When the escapement-wheel is raised, the hook shaped end of the springpresses against both of the faces 121 and 122 and causes the beveled orworking end of the dog 100 to stand in the position shown by the fulllines at Fig. S, which position is a central or intermediate one, thedog being adapted to be moved to either of the two dotted-line positionsalso shown at said figure. Vhen the dog is moved to the dotted lineposition a, the pressure of the spring upon the face 121 is removed, andhence when the dog is released from this position the upper end of thespring, acting upon the face 122, returns the dog to the full-line orintermediate position, at which the spring bears upon both of the saidfaces, serving thereby as a stop to the movement of the dog and toccntralize the same. \Vhen the dog is moved to the dottedline positionl), the upper face 122 is swung away from the upper end of the spring,so that when the dog is thereafter released the spring, acting upon theface 121, will serve to return the dog to its central normal positionagain.

rlhe operations of the escapement devices, including the tripping actionof the feedrack, &c., will now be more particularly described.

The escapement-wheel and pinion-shaft with its bearing or support istilted or vibrated to separate the escapement-wheel and the dog 100 byeither of the two rock shafts or levers attached to the platen-carrier,the one at the left-hand side thereof (designated by then umcral 73)being known as the releasekey77 and the one at the right-hand sideoperating only in conjunction with the linespace lever 30. Then thefinger-piece 7 5 of the release-key is vibrated toward the right andpushed down, the feed-rack is caused to swing` upon its axis ofmotion-the rod 68- and in this swinging movement, through its engagementwith the pinion, to tilt or vibrate the shaft 61 and cause theescapement-wheel to rise above the plane of the escapementdog, or to theposition shown in full lines at Figs. 5 and 9. lV hen the release-key isthus actuated and the escapement-wheel elevated, the carriage andplaten-carrier may be moved quickly in either direction by the hand4toward the right or by the driving power toward the left, which drivingpower may consist of the usual spring-drum, (not shown, but connected tothe carriage by a belt or band 126 in the usual manner.)

lV hen the line-space lever is vibrated to effect theline-spacing of theplaten simultaneously with the return movement of the carriage for thebeginning of a new line, the right-hand rock-shaft 49 is turned andthrough the connections described the escapementwheel is lifted ordisengaged from the escapement-dog.

riage-returning movement.

Referring more particularly to Fig. 14, it-

will be observed that there is a space between the right-hand curved arm65 and the righthand lug 69. This space is provided to en- 5 able thecarriage (of which the lug 69 forms ro ing, tripping, or disengaging thefeed-rack devices from the carriage and platen-carrier, in order thatthe escapement-wheel may drop into engagement with the escapementdog inadvance of the completion of the car- The spring 71, coiled about theright-hand end of the rod GS and extended over and attached to thefeed-rack, as shown at Fig. 14, hasatendency to keep the rack normallyto the limit of its 2o right-hand movement, or, in other words,

with the left-hand arm G5 against the lefthand lug 69.

The tripping or releasing action of the feedrack will now be moreminutely described and in connection more particularly with Figs. 5,

14, 15, and 1G.

At Figs. 14 and 15 the parts are shown in the saine positions, and theseviews illustrate the returning movement of the carriage and 3o itsconnected parts after the line-space action and while the line-spacehandle is held up by the operator, at which time it will be understoodthe finger of the rock-shaft 4:7 is bearing down upon the pin 53 and thees- 3 5 capement-wheel is in its raised position. New,

with the parts in this condition, when the contact-piece 77 strikes thehead or pin 88 the feed-rack and its rigidly-connected parts arearrested, while the carriage and the platen- 4o carrier continue a shortdistance farther toward the right and until the arm 9i comes against theleft-hand side of the contact-piece 7 7, thus arresting the carriage.During this slight additional movement of the carriage 45 the finger 50slides off the pin 53 and thus releases the feed-rack and its connectedparts and permits the escapement-wheel to descend into engagement withthe escapement-dog 100 under the action of the spring 101., the

5o feed-rack and pinion simultaneously rising.

55 under the action ofthe spring-drum or driving power to renew theirproper relationship to the feed-rack, but if after the automatic releaseof the feed-rack and before the carriage and platen-carrier make thisslight return movement toward the left the line-space llever be notreleased the rack would be forced toward the right and canse a jammingor pressure between the finger 50 and the end of the pin 53, if such pinwere made rigid instead of yielding, as shown. Then the condition ofaffairs just described occurs, the

linger 50 will force the pin inwardly against the action of its spring57 a distance equal to the rebound orreturn movement oftheplatencarrier, thereby avoiding any locking or jamming of theparts,whieh would injuriously affect the machine or throw its parts outof proper' working position. As soon as the linespace lever is releasedafter this relbound of the platen-carrier the finger 50 is thrownupwardly by the spring 51 and the pin 53 is pushed outwardly again bythe spring 57.

lt will be understood,of course,that the rack may be depressed by themeans described in connection with the line-space lever and releasedtherefroin and from the carriage by means of the tripping-arm 76 and itscontactpieces without the employment of the spring or yielding pin 53,but as the said pin performs the described highly useful function in themechanism its use is therefore preferred for this reason.

The main object of this automatic tripping or releasement of the rack isto enable the eseapement-wheel and dog to automatically reengage or comeinto proper working position before the completion of the rebound of thecarriage, in order that the feeding mechanism shall positively be inreadiness for action before and irrespective of any releasement of theline-space lever, and hence before the recommencement of the work at thekeyboard.

Referring now more particularly to Figs. 5, 7, S, and 9, I shall nowmore particularly describe the letter-spacing or carriage-feedingaction.

Normally, or when the machine is in disuse, the yielding spring-pressedfeeding-dog 100 stands in engagement with the escapementwheel, whichunder the driving power and through the intermediate rack and pinion hasa tendency to rotate in the direction of the arrow at Fig. 9, but saidrotation is prevented at this time by reason of therighthand side of thedog bearing against a stop 127, forming a part of the rocker 111.

Then the finger-key connected with the type-bar (not shown) or thespacing mechanism is actuated, the dog 100 is rocked forward out of theplane of the escapementwheel and the rigid do0` 99 is by the sameoperationmoved into the plane of said wheel and into the space betweentwo of its teeth to check the rotation of said wheel and prevent anymovement at this time of the papercarriage. out of the escapement-wheelits spring 123 operates to vibrate said dog toward the left or into theintermediate position shown by the full lin es at Figs. 8 and 9. Whensaid {ingerkey is released, the dog 1GO passes into the next space ornotch of the escapement-wheel, and as the rigid dog moves back out ofengagement with said wheel the latter, being unrestrained, may make apartial rotation in the direction of the arrow at Fig. E), during whichthe dog 100 is vibrated toward the right As soon as the feed-dog 100passesv IIO and against its stop 127, while simultaneously the carriageis moved or fed through the rack and pinion only one letter-spacedistance.

In the backward-rocking movement of .the dogs the beveled or inclinedportion of the rigid dog has a peculiar mode of operation, whereby thecarriage may be fed in a shorter space of time than heretofore, butinasmuch as this improvement is the invention of another I need notfurther refer thereto. As far as my present improvements are concernedan ordinary straight dog may be employed with equal advantage.

When the carriage is returned or moved toward the ri ght,thcescapeinent-wheel, through the rack and pinion and the shaft, is rotatedin the direction shown by the arrow at Fig. S, and, owing to the contactof the free ends of the teeth of the escapement-wheel with the beveledside of the feeding-dog 100, the latter is vibrated and depressed to thedotted-line position shown at l) by each successive tooth upon theescapement-wheel. As soon as the right-hand pull on the carriage isreleased the driving power of the carriage moves it slightly in thereverse direction or toward the left, thus giving the escapement-wheel apartial rotation in the reverse direction or in the direction indicatedby the arrowT at Fig. 9, which operates to carry the dog back to itsnormal position against the stop 127.

It will be observed from Figs. 8 and 9 that the dog 100 is moved in onedirection by the escapement-wheel in the forward movement of thecarriage and in the opposite direction by the escapement-wheel in thereturn movement of the carriage. From the foregoing the advantage ofhaving the dog 100 capable of occupying three different positions willbe apparent. The essence of this part of the improvement consists in aconstruction wherein the dog when out of the escapement-wheel or unactedupon may occupy a central or intermediate position, so that when it isvibrated back into engagement with the escapementwheel and is acted uponthereby it may move to the right of said intermediate position, but whenthe carriage is being ret-urned and the escapenient-wheel rotated in theopposite direction the dog may be moved toward the left from itsintermediate position in order to facilitate the return of the carriage.This construction and operation of the dog involves the employment ofsome movable stopping means for holding the dog in the central orintermediate position, and I have found in practice that the hook-shapedspring bearing upon the two faces 121 and 122 not only serves to holdthe said dogI in the said intermediate position, but also acts to returnthe dog to said position when vibrated to either the right or the leftthereof.

It will be observed when the escapementwheel is raised from engagementwith the dog 100 by means of either the release-key or the line spacelever thro-ugh the connections hereinbefore described that, owing to theremoval of the lateral or side pressure upon said dog by said wheel, dueto the driving power, the spring 123 of the dog 100 acts to vibrate saiddog toward .the left andv to the said intermediate position, asillustrated at Fig. 9, and hence when the carriage is stopped and thehand is removed from the release-key or the line-space lever, as thecase may be, the escapement-wheel will drop down into engagement withsaid dog while the latter is in a central position, but will instantlycarry said dog back against its stop 127, owing to the partialrevolution of the escapementwheel under the force of the inainspring ordriving power, thus feeding the carriage at this moment oneletter-space, which movement may represent the rebounding distance ofthe carriage when the rack is tripped and the carriage stopped againstthe margin-stop contrivance hereinbefore referred to.

The several improvements in or upon the platen-carrier will now bedescribed.

The shifting movement of the platen-carv tained, heretofore when theplaten carrier i was raised to inspect the work, as at Fig. 3, therocker-arms 10 would swing rearwardly and when the platen was loweredthey would swing forwardly again and rather violently in bothdirections. To prevent this action in the rising and lowering of theplaten the following locking means have been provided: At about themiddle of the back rod 17 of the platen-carrier is secured a block 128,which, when the platen-carrier is down in working position, stands in ahorizontal plane, as shown at Figs. and G. A plate 129 is looselyconnected to said back rod 17 by means of two upturned hooks 130, theplate being cut away between said hooks to accommodate the block. Therear end of said plate is slotted at 131, and through this slot passesvertically a screw 132, which takes into a tapped hole in the arm 94e,the head of the screw being large'1 in diameter than the wid th of theslot to limit the upward movement of the rear end of the plate. On theunder side of the plate and on each side of the slot is a lug 133,adapted to bear against a shoulder or wall 134, formed on the upper sideof said arm 94. The rear end of the block is provided with anangle-piece 125, attached by a screw, which piece, when theplaten-carrier is down in working position, bears on the under side ofthe plate 'at its front end and serves to hold said plate in an elevatedposition and with the lugs 133 out of the plane of the shoulder or wall134, as shown at Fig. 5, so that the platen-carrier may be readilyshifted back and forth by the shifting-key for upper and lower caseprinting, these movements being permitted by reason of the slot 131 inthe plate, which is of a length slightly greater than the throw of theplaten-carrier. The

. ...familie plane of the hooks.

`positions of the vparts during the rearward" i shifting movements isshown at Fig. 6. Vhen, however, the platen-carrier is turned up forinspection of the work, as at Fig. 3,

the axis of motion being coincident with the rod 17, the angle piece orlifter 135 swings downwardly and simultaneously the plate drops bygravity and the lugs thereon fall in front of the shoulder or wall 134.This ac- 1o tion takes place during the first part of the upturningmovement of the platen-carrier. During the remainder of such movementthe` angle-piece or lifter moves entirely away from the plate and to theposition shown at Fig.

It will be seen that by this construction or latched at the beginning ofthe movement to swing it up to inspect the work as that the rocker-arms10 and back rod 17 are prevented 2o from moving rearwardly at this time,and hence the pins 1S `are maintained against the` front stops 19.

During the turning-down movement of the platen-carrier when the device135 arrives at 2 5 the plate 129 it acts to lift the same and raise thelugs 133 above the top of the shoulder or wall 134, and thus restore theparts to the positions shown at Fig. 5.

The hooks 130 are prevented from falling 3o from the rod 17 by a toppiece or plate 136, which is secured thereto by a screw 137, this platehaving forwardly projecting` fin gers 138, which rest upon the top ofsaid bar in This top piece or plate 136 also performs the office oflocking or holding the platen-carrier in its upturned position, the saidplate being provided with a forwardly-projecting spring-tongue 13S),bent at its forward end to form a notch 140 4o for the front beveled end141 of the block 128.1 As will be seen at Fig. 3, when the platen isturned up the said tongue snaps upon the` forward end of theblock 128and with sufficient force to hold the platen-carrier in its raisedposition, but not so firmly as that the platen may not be forced backstill farther, so as to bring the platen down upon the paper-table,which'is supported by posts enter- M-i the holes 144 in the carriage.The platen 5o is "pressed down onto the paper-table orv to the rearwarddotted-line position shown at Fig. 3 (at which the paper-table isomitted for the sake `of 'clearness) only when it `may be desired tosecure a very firm support, as in the making of erasures by rubbing,the.

145 is the shaft or axis of the feed-roller 146, which may be made insections and to protrude through openings in a metallic apron orguide-plate 147, secured at its upper end to a rocking rod 14S,extending across the platen-carrier and attached to the` side barsthereof by screw pivots or centers 145) at its ends, the said apron orguide-plate being preferably provided at its lower edge with apressure-bar 150, which may be graduated and marked to form a scalecorresponding to the letter-spacing of the carriage.

and operation the platen-carri er is so locked f Thefeed-roller axis orshaft is supported in bearings in the lower ends of arms or links 151,which are pivoted at 152 in ears 153 on the back rod 17. On the underside ofeach arm is attached by screws 154`a plate-spring 155, whichbears at its upperend against a lug on the back rod 17 and whichterminates at its lower end at near the pressure or scale bar 150. Thepurpose of these springs is to hold the feed-roller against the platenor the paper thereon with the requisite degree of pressure.

Upon the upper side of each arm 151 is a pin 156, and opposite theretoon the rocking shaft 148 is a wing or lug 157, while at the left-handend of said shaft preferably is affixed a handle or lever 15S, having arearward extension 159, adapted to bear against the under side of one ofthe forks at the rear end of the left-hand side bar 15 of theplatencarrier. When the handleis pushed rearwardly, the shaft 148 isrocked, and by means of the wings acting upon the pins the arms 151 arevibrated slightly rearwardly against the tension of their springs andt-he feedroller is moved avay from the platen or the paper thereon, asindicated by the dotted lines at Fig. 5. By this construction provisionis made for the easy introduction and removal of the paper as well asfor its adjustment in any direction when upon the platen, the castingoff of the feed-roller leaving the paper free or loose upon the platen.In order, however, to prevent any backward movement of the platen duringadjustments of the paper thereupon, a detent or dog 160 is employed.This device is `preferably located upon t-he right-hand end of the shaft14S and stands normally out of engagement with the ratchet-wheel 26 atthe right-hand end of the platen.

When the handle or lever 15S is actuated and the feed-roller movedrearwardlyfrom the paper, the point of the detent or dog issimultaneously vibrated up into engagement with the ratchet-wheel, asshown by the dotted lines at Fig.` 5, thereby preventing saidratchet-wheel and the platen from turning backwardly du rin g theshifting or adjustment of the paper. This platen-carrier locking orholding detent may be arranged at any desired locality to perform itslookin g function. If the ratchet-wheel were at the other end of theplaten, the detent might be made a part of the iin ger piece or lever,or the lever might, if desired, be brought over to the right-hand sideof the platen and be made appart of the detent thereat. The main part ofthis improvement consists in moving into engagement with the platen adetaining device simultaneously with the casting off or removal of thefeed-roller for the purpose of preventing backward rotation of theplaten.

Referring more particularly to Figs. 1, 12, and 13, centrally of thefront bar 16 of the platen-carrier and firmly attached thereto on itsunder side by screws 161 is a small plate ICO lIO

162, which is forked or provided with two arms 163 at its left-hand sideto receive the small grooved roll 21, which travels upon the shift-rod22, hereinbefore referred to.

On the under side of the plate 162 is firmly secured by a screw 16J: ayoke-block 165, which straddles the shift-rod and through which moreparticularly the platen-carrier is shift-ed for upper-case printing whenthe shiftkey is actuated and the shift-rod vibrated. The yoke-block isbeveled or flaring at its lower end to enable it to more readily embracethe shift-rod in the turning-down movement of the platen afterinspectingthe work on the under side thereof.

The front side of the yoke-block is grooved or recessed to receive thefront scale-bar 166 at its upper edge, and said bar is secured inposition thereupon additionally by a small bent finger 167, attached tothe yoke-block by a screw 16S. The ends of the scale-bar are attachedeach to an arm 169, secured to the under side of the platen-carrierfront bar and extending first horizontally outward and then obliquelydownward and outward, as shown more particularly at Fig. i.,

In connection with the scale is employed a pointer or index 170, whichis formed on a forwardly-extending arm 171, secured by a screw 172 tothe under side of the shift-rod. This pointer is set exactly in theplane of the striking centers of the types, and hence indicates, inconnection with the scale, the printing-point and the travel or progressof the carriage.

Referring` to Figs. 19 and 20, a modification of the means for swingingor tilting the escapement-wheel, shaft, pinion, the., will be foundillustrated. In this construction the shaft 61, having at one end apinion 60n and roll 64 and at the opposite end an escapement-wheel 9S,rotates in a support or bearing which is pivoted by lateral arms Qb upona pin 96, fitted in lugs 96D, rising from the top plate. Engaging withsaid pinionis a feed-rack 55, and cooperating with said escapement wheelare dogs similar to those hereinbefore described. The feed-rack may besupported by a pivoted frame, as in the other Views, and the feed-rackand pinion may be maintained in engagement by ahook or catchsubstantially like that shown in the other views; but in thismodification of my invention the shaft, escapement-wheel, pinion, andrack all move together about the axis 96a instead of the rack and pinionmoving downwardly and the escapement-wheel upwardly during the releasingaction, as shown at Fig. 5, and for this reason the means for liftingsaid devices must be varied somewhat from the means hereinbeforedescribed with reference to the main views. For the purpose of swingingupwardly the escapement- Wheel and rack and pinion, releasing meanssubstantially like those shown in the aforesaid English patent may beemployed; that is to say, releasing-levers of the first order vhaving anupward movement at their rear ends and acting upon the feed-rack oreXtensions thereof may be used for simultaneously lifting or swingingupwardly the parts shown at Figs. 10 and 2O herein for the purpose ofseparating the escapement-wheel and dog. The parts will all return totheir normal positions simultaneously by gravity, and the downwardswinging movement thereof may be limited by the adjustable stop .660,made,

preferably, in the form of a screw; but, if desired, a spring may beadded to supplement the action of gravity in returning the parts.

Various changes in detail construction and arrangement maybe madewithout departing from the several features of my improvements, and itwill of course be understood that in so far as the escapement -trippingmechanism, broadly considered, is concerned any form of actuating orline-spacing mechanism may be employed in lieu of that shown.

That I claim as new, and desire to secure by Letters Patent, is-

1. In a typewriting machine, the combination of a carriage having aswinging feed-rack, a shaft having a pinion and an escapementwheel andmounted in a pivotal support or bearing, so that the escapement-wheelmay be moved from engagement with the escapement-dog, substantially asset forth.

2. In a type-writing machine,`the combination of a carriage having aswinging feed-rack, an escapement dog, an escapement -wheel therefor, apinion for the rack, a rotatory shaft for said wheel and pinion havingalso a vibratory or swinging movement, and means upon the carriage orplaten-carrier to separate the said escapement-wheel from its dogthrough the devices described.

3. In a type-writ-ing machine, the combination of an escapement-wheeladapted to swing upwardly to be disengaged from its dog, a swinging'rack and pinion connected to said wheel, and a key for depressing therack and pinion and lifting the escapement-wheel, substantially as setforth.

4c. In a type-writing machine, the combination of a ratchet-wheeladapted to swing upwardly to disengage from its dog, a swinging rack andpinion, and a release-key connected to the rack and attached to theplaten-carrier, substantially as set forth.

5. In a type-writing machine, the combination with the escapementmechanism including the swinging escapement-wheel and rack and pinion,of a line-spacing mechanism for the platen connected to the escapementmechanism in a manner such that during the linespacing operation and thesimultaneous return of the platen for the beginning of a new line theescapem ent-wheel may be lifted from engagement with its dog,substantially as set forth.

6. In a type-writing machine, the combination of an escapement-dog, apivoted springpressed bearing, a shaft adapted to rotate therein andalso to swing with said bearing, an

.escapement-wheel on one end of said shaft, a

7. In a type-writin g machine, the combina` tion with the dog,escapement-wheel, pinion, swinging shaft, and swinging rack, of ahook orcatch adapted to maintain said rack and pinion in constant engagement,substantially as set forth. p

S. In a type-writing machine, the combination with thedog, the swingingshaft, the escapement-wheel and the pinion on said shaft, of theswinging rack, and means for holding said rack and pinion in engagement,substantially as described.

9. In a type-writing machine, the combination with the dog, swingingshaft, escapementwheel, pinion, swinging rack and bar attached theretoor forming a part thereof, of a springactuated pivoted hook engagingsaid bar, substantially as set forth.

` 10. In a type-writing machine, the combination of the dog, the`swinging shaft having at one end an escapement-wheel and at the otherend a pinion and a roller,a swinging rack to engage with said pinion andcarrying a rib to-bear on said roller, and a hook or catch,substantially as described.

ll. In a type-writing machine, the combination of the dog, the swingingbearing or support, the shaft therein, the escapementwheel on one end ofsaid shaft, a pinion on the opposite end thereof, a swinging feed-rackhaving a ledge or flange, and a hook or catch engaging the same mountedat the inner end of the shaft bearing or support and adapted to swingtherewith, substantially as described.

l2. In a type-writing machine, the combination of the dog, thehorizontally-pivoted bearing or support, the shaft therein having at oneend t-he escapement-wheel and at the opposite end the pinion and roll,the swinging feed-rack having a rib and a ledge or flange, and aspring-actuated hook or catch pivoted at the inner end of said bearingor support and normally engaging with said ledge or flange,substantially as described.

13. In a type-writing machine, the combination of a dog, a vibratoryshaft` provided with an escapement-wheel for said dog and also with apinion, a paper-carriage having a swinging rack, to mesh constantly withsaid pinion, a platen, a line-spacing mechanism therefor, and by which,through the swinging rack, pinion and vibratory shaft,` theescapement-wheel is disengaged from its dog, and a trip mechanism forautomatically releasing the escapement-wheel, shaft, and pinion, andrack during the return movement of the carriage and before the latter isfully arrested 5' substantially as described.

14. In a type-writing machine, the combination of an escapementmechanism comprising the swinging escapement-wheel and rack and pinion,an arm connected to said rack and adapted to contact with a stop on theframework to arrest the movement of the rack toward the right during thetermination of the movement of the carriage in the same direction, aline-spacing mechanism adaptedl to rotate the platen, and a deviceconnected to said line-spacing mechanism and to the feed-rack adapted todepress the latter and to release it when its motion toward the right isarrested by the said stop, whereby the rack, pinion and escapement-wheelmay return to their normal positions in advance of the arrest of thecarriage, substantially as set forth.

15. In a type-writing machine, the combination of an escapementmechanism comprising a swinging escapement-wheel, pinion and feed-rack,an arm connected to said feedrack and adapted to contact with a stop, ayielding device on said feed-rack, a lever or rock-shaft on the carriageadapted to act upon said yielding device, and a platen linespacingmechanism adapted to act upon said lever or rock-shaft, the wholeoperatingin substantially the manner set' forth.

1G. In a type-writing machine, the combination of an escapementmechanism comprising a swinging ratchet-wheel, pinion and rack, the rackbeing attached to a frame hinged upon the carriage, which latter has asliding movement toward the right independently of said pivotedrack-frame, an arm proj ectlng rearwardly from said frame adapted tocontact with a relatively-fixed stop, and a platen line-spacingmechanism connected to said feed-rack to operate in substantially themanner described.

17. In a type-writing machine, the combination of an escapementmechanism comprising a swinging escapement-wheel, pinion and feed-rack,Aan arm connected to said feedrack and adapted to contact with arelativelyfixed stop, a spring-pressed pin on said'feedrack, a lever orrock-shaft on the carriage adapted to act upon said pin, and a platenline-spacing mechanism adapted to act upon said lever or rock-shaft, thewhole operating in substantially the manner. set forth.

18. In a type-writing machine, the combination of an escapementmechanism comprising an escapement wheel, pinion and rack, the rackbeing attached to a frame or support hinged upon the carriage and in amanner to enable the carriage to move longitudinally independently ofsaid rack and frame, and a stop for arresting said rack in advance ofthe carriage, substantially as described.

19. In a type-writing machine, the combination of an escapementmechanism comprising an escapement wheel, pinion and swinging rack, therack frame or support being hinged upon the carriage and having arelatively independent longitudinal movement, a spring tending normallyto force said frame and rack toward the right against a IOO IIO

stop on the carriage, and means for arresting the feed-rack in advanceof the carriage, substantially as described.

20. In a type-writing machine, the combination of the escapementmechanism substantially as described, the swinging feedrack forming apart thereof and connected to the line-spacing mechanism of the platen,the rack-bar frame or support hinged upon the carriage and movableindependently endwise thereof, a spring for said feed-rack or support,the lugs or abutments therefor upon the carriage, and therearwardly-extending contact-arm adapted to engage a relativelyiiXedstop upon the framework, substantially as described.

21. In a type-writing machine, the combination of the dog, the swingingescapementwheel and pinion, the swinging feed-rack supported upon thecarriage, a hinge rod 68 therefor mounted in the lugs 69, the spring 71,the arm 7G having contact 77, the head or contact S8, the spring-pressedpin 53, a rockshaft or lever 47, and a line-spacing mechanism,substantially as described.

22. In a type-writing machine, and in au escapement tripping mechanism,substantially as described, the combination of the spring-pressedrack-bar frame movable longitudinally independently of the carriage andhaving the contact 7 7, and the adjustable relatively-hired stop 88.

In a type-writing machine, and in an escapement tripping mechanism,substantial ly as described, the combination of the spring-pressed pin53, the rock-shaft 47 detachably connected therewith, and a linespacingmechanism.

24. In a type-writing machine, and in an escapement-releasinsl andautomatic tripping mechanism, a yielding device arranged between thereleasing mechanism and the escapement mechanism to enable the parts toassume their proper relationship after the tripping action and withoutbinding or jamming under the force of the carriage-driving spring,substantially as described.

25. In a type-writing machine, the combination with the dog, swingingescapementwheel, pinion and feed-rack, of line-spacing mechanism, and anintermediate rock-shaft adapted to depress said feed-rack and raise saidescapement-wheel when the line-spacing movement is effected.

26. In a type-writing machine, the combination of the carriage havingthe arm 94, the hinged feed-rack frame on the carriage having the arm 76,and a contact or head on the framework,the frame-arm 76 being adaptedto strike said contact and trip th e rack,and the carriagearm 94 beingadapted to strike the arm 76 after the rack has been tripped and therebyarrest the return movement of the carriage, substantially as described.

27. In a type-writing machine, the combination of a carriage, anescapement mechanism, the feed-rack portion of which is carried by saidcarriage and has an independent tripping action, the arm 7 (i extendingrearwardly from the feed-rack support or frame and adapted to contactwith a relatively-fixed stop to effect said tripping action, and an arm94 on the carriage adapted to contact with the arm 7 6 after saidtripping action and for the purpose of arresting the carriage,substantially as described.

28. In a type-writing machine, and in combination with the carriage andits escapement mechanism, the adjustable block 79, the contact-head 88arranged in au opening therein, and the ad justing-screw and set-screwtherefor, substantially as described.

29. In a type-writing machine, the combination of a paper-carriage, amarginal stop contrivance consisting of a bifurcated block adapted toslide upon two parallel rods, the lower one of which is provided with aseries of notches, and a spring-pressed stem passing through said blockand having a beveled catch at its lower end to engage with said notches,substantially as set forth.

30. In a type-writing machine, the combination of a paper-carriage, amarginal stop consisting of a block adapted to slide upon two parallelrods, the lower one of which is provided with a series of notches, aspringpressed stem passing through said block and having a catch at itslower end adapted to engage with said notches, and an adjustable stop 88adapted to be engaged by an arm or cont-act-piece of acarriage-escapement mechanism, substantially as set forth.

3l. In a type-writing machine, the combination of a power-drivenpaper-carriage, an escapement-wheel, a holding dog, anda feeding-doghaving a central normal position and adapted to be moved to either sidethereof, substantially as described.

32. In a type-writing machine, the combination of a power-drivenpaper-carriage, an escapement-wheel, a holding-dog, and a pivotedfeeding-dog having two faces as 121 and 122 and a spring adapted to bearthereupon to hold said dog in a central normal position, substantiallyin the manner described.

33. In a type-writing machine, the combination of a power-drivenpaper-carriage, a rocker or dog-holder, a dog pivoted upon said holderand adapted to occupy either of three positions, means for holding saiddog in the central or intermediate position, and an escapement-wheelcooperating with said dog, substantially as described.

34. In a type-writing machine, the combination of a power-drivenpaper-carriage, a lifting escapement-wheel, a holding-dog, and afeeding-dog having a normal central position and adapted to be moved toeither side thereof by the escapement-wheel, substantially as described.

35. In a type-writing machine and in the escapement lnechanisimthecombination with an escapement-wheel, and a holding-dog, of a pivotedfeeding-dog capable of occupying three different positions, and aspring-stop mechanism tending to keep said dog in the central orintermediate position.

36. In a type-writing machine and in the escapement mechanism, thecombination with an escapement-wheel, and a holding-dog, of a pivotedfeeding-dog, and a hook-shaped spring bearing upon said dog at twopoints, one above and the other below the plane of its pivot,substantially as described.

37. .In a type-writing machine,A the combination with a platen-carrierhaving a rearward-swinging movement on arms or links for upper-caseprinting and adapted to be turned up for inspection of the Work, of alatch mechanism, substantially as described, for preventing theplaten-carrier from shifting upon its arms or links during the turn-`ing-up movement consisting of the sliding plate 129 having the dependinglug 133 and pivoted to the back rod 17 of the platen-carrier, a shoulder134 adapted to engage the lug 133, and the lifter 135 on said rod 17.

38. In a type-writing machine, the combination with a platen-carrierhaving a rearward-swinging movement on arms or links for upper-caseprinting and adapted to be turned up for inspection of the work, of asliding gravity latch-plate hinged upon the back rod of theplaten-carrier and adapted to fall and engage a shoulder on the maincarriage when the platen-carrier is turned up, and a device upon andturning with said back rod adapted to lift said latch during theturning-down movement of said platen-carrier.

39. In a type-Writing machine, the combination with a swingingplaten-carrier constructed substantially as described, of a sliding andguided plate hinged upon the back rod of said carrier, a lug at the rearend of said plate adapted to engage with a shoulder on themain carriagewhen said platen-carrier is turned up, and a device on and turning withthe said back rod adapted to lift said plate when the platen-carrier isturned down.

40. In a type-writing machine, the combination of a platen-carrier, a`platen rotatably mounted therein and provided with a ratchetwheel, afeed-roller mounted on swinging arms or links, a lever or handle formoving said feed-roller out of contact with the platen or the paperthereon, and a normally free detent which moves into engagement withsaid ratchet-wheel when said roller is moved away from the platen forthe purpose of holding said platen against backward rotation,substantially as set forth.

41. In a type-writing machine, the combination of a platen-carrier, aplaten rotatably mounted therein and provided with a ratchetwheel, afeed-roller mounted upon pivoted arms or links, and a rock-shaft havingat one end a lever or handle and at the other lend a detent, the wholeoperating in substantially the manner set fort 42. In a type-writingmachine, the combination with the platen-carrier, and the shiftrail, ofthe plate 162 attached to the platencarrier front bar, the rollerjournaled in arms 163 on said plate, the yoke-block attached to theunder side of said plate, and a scale-bar attached to the face of saidyoke-block, substantially as set forth.

43.' In a type-writing machine, the combination with the platen-carrier,and the shiftrail, of the plate 162 attached to the platencarrier frontbar, the roller journaled in arms 163 on said plate, the yoke-blockattached to the under side of said plate, the scale-bar attached to theface of said yoke-block, and the forwardly-extending arm 171 attached tothe shift-rail and provided with an index arranged contiguous to thescale and in the plane of the printing-point, substantially asdescribed.

Signed at New York, in the county of New York and State of New York,this 24th day of December, A. D. 1894.

GEO. '13. YVEBB.

Witnesses:

JACOB FELBEL, PHILLIPS ABBOTT.

